Page 2 - Ignition Source News Today : Breaking News, Live Updates & Top Stories | Vimarsana

>> well, i mean these are natural part of california viert in so-- environment in some way. one thing they have in common is they adapted to fire. this would be happening whether we were here or not. humans are major ignition source and the way that we have our communities up against or with the wild land. it makes a vulnerability to these events to these natural events. >> talk to me about the drought down there in california. the humidity, the winds. all of those factors that are contributing. if you can and if it's appropriate bring in climate change. >> i think that's a good question. thes...

Doing a very, very good job. unfortunately, we don't have 100% containment on some of the larg larger fires. natalie asked what makes up these wildfires. we have three major ingredients that make a wildfire spread. may sound obvious, but you have to think about it. the fuel for the fire is needed, the dry grasslands. some of the marshy areas maybe not getting enough rainfall. they can dry out easily. you need the heat for an ignition source. we've had temperatures soaring in the 80s lately. then oxygen. the air that we breathe is about 21% oxygen. and fire only needs about 16%. so we have plen...

And touch a door knob and the spark you get. less energy than that was necessary to ignite that fuel tank. >> but there is no clear source of ignition on board twa flight 800. by design, only low voltage wires are used inside the fuel tank. >> however, those low voltage wires pass in very close proximity to much higher voltage wires in wiring bundles. and as the airplane's age and these wiring bundles chafe, you can have occasion where there's arcing or shorting between these wires, which introduce this high voltage into low voltage wire and now you have an ignition source. >> we don't have a ...

Take a lot of energy to ignite these vapors. it's less than you feel if you rub your feet across a carpet and touch a door knob and the spark you get. less energy than that was necessary to ignite that fuel tank. >> but there is no clear source of ignition on board twa flight 800. by design, only low voltage wires are used inside the fuel tank. >> however, those low voltage wires pass in very close proximity to much higher voltage wires in wiring bundles. and as the airplane's age and these wiring bundles chafe, you can have occasion where there's arcing or shorting between these wires, which ...

Tarmac at the gate with the air conditioners running. and the air conditioners are located right underneath the fuel tank right here so they provide a large source of heat. we did some testing and found out that the temperatures were well over 100 degrees in most of the tank. >> the temperature rose quickly on the fuel and it is turning to vapor very, very rapidly and filling up the container with vapors, an explosive mixture of vapors. >> when you provide the conditions together and they introduce a spark in there from any source, it will ignite and burn rapidly. it will explode. >> in some m...